A galvanometer coil has a resistance of 15 ohm and the meter shows full scale deflection for a current of 4 mA. How will you convert it to an ammeter of range 6A?

A galvanometer coil has a resistance of 12 Ohm and meter shows full scale deflection for a current of 3 mA . How will you convert the galvanometer into a voltmeter of range O to 18 V ?

A galvanometer of resistance 100 Omega gives full-scale defletion for a current of 10muA . Find the resistance needed to convert it to an ammeter of range 1A.